… ) could suppress nocturnal melatonin secretion and induce … suppress melatonin or entrain
and phase shift melatonin … that regulate photic influences on melatonin secretion include the …

The photopigment in the human eye that transduces light for circadian and neuroendocrine
regulation, is unknown. The aim of this study was to establish an action spectrum for light-…

… melatonin physiology in both laboratory animals and humans. In addition, the results on the
effects of melatonin … controlled in vitro studies on melatonin's effects on human breast cancer …

… in humans, as measured by the pineal melatonin rhythm, is also wavelength dependent. …
Similarly, 460 nm monochromatic light causes twice the amount of melatonin suppression …

… will dampen the subsequent suppression of melatonin by monochromatic light in healthy …
, and melatonin was measured by radioimmunoassay. Comparison of melatonin suppression …

This study tested the capacity of different irradiances of monochromatic light to reduce plasma
melatonin in normal humans. Six healthy male volunteers, 24–34 years old, were exposed …

… of melatonin. The aim of this study was to compare changes in plasma melatonin levels when
… Plasma melatonin levels were determined by radioimmunoassay. ANOVA demonstrated a …

… melatonin production leading to unopposed estrogen secretion and increased breast cancer
risk. We now know that overall melatonin … and secretion of pineal melatonin during the night …

… ) from the percent melatonin change value for … melatonin values to account for normal
rise in melatonin levels during this time of night (9, 24). Each group of pre-exposure melatonin …

… 17 photons/cm 2 can acutely suppress pineal melatonin levels. In normal healthy humans, …
significant melatonin suppression at 460 nm and small reductions of plasma melatonin levels …